These 3 afni01_intro_*.mp4 files are at full screen resolution
1440x900. Each video is about 30 minutes duration. Each video
had its audio cleaned up a little (in iMovie).

afni01_intro.PART.1.mp4    = Didactic intro to AFNI
afni01_intro.PART.1.pdf    = Slides for above video
afni01_intro.PART.1.pptx   = PowerPoint source for slides
afni01_intro.PART.1.txt    = Short descriptive text

afni01_intro.PART.2a.mp4   = First part of Hands-on AFNI GUI
afni01_intro.PART.2b.mp4   = Second part of Hands-on AFNI GUI
afni01_intro.PART.2.pdf    = Slides for above videos (one set)
afni01_intro.PART.2.pptx   = PowerPoint source for slides
afni01_intro.PART.2.txt    = Short descriptive text